"JavaScript" JavaScript simulation class

Beauty ("$Class", ["$underscore"],function (_) {var Class = function () {var length = Arguments.length;        var option = arguments[length-1]; Option.init = Option.init | |        function () {};  If the parameter has a parent class to inherit if (length = = = 2) {/** * @ignore */var superclass =            Arguments[0].extend;            /** * @ignore * */var tempclass = function () {};            Tempclass.prototype = Superclass.prototype; /** * @ignore */var subclass = function () {this.init.apply (this, Argu            ments);            };            Plus a static property reference to the parent class prototype Subclass.superclass = Superclass.prototype;            Subclass.superclass = superclass; /** * @ignore */subclass.callsuper = function (context, func) {var sli                CE = Array.prototype.slice; var a = SLIce.call (arguments, 2);                var func = Subclass.superclass[func];                var func = Subclass.superclass.prototype[func];                if (func) {func.apply (context, A.concat (Slice.call (arguments)));            }            };            Specify prototype Subclass.prototype = new Tempclass ();            Reassign constructor subClass.prototype.constructor = subclass;            _.extend (subclass.prototype, option);                /** * @ignore */subClass.prototype.init = function () {//Call the constructor of the parent class                SubClass.superClass.init.apply (this, arguments);            Call the constructor of this class itself option.init.apply (this, arguments);            };            return subclass;                 If there is no parent class in the argument, simply construct a class} else {if (length = = 1) {/** * @ignore */var Newclass = function () {//AddedReturn, otherwise the object returned by Init does not take effect return this.init.apply (this, arguments);                };                newclass.prototype = option;            return newclass;    }        }    }; Beauty. $superPackage ("$Class", Class);});

　　

"JavaScript" JavaScript simulation class